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B2A Email Deliverability, MX, SPF & DMARC Verifier
B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-23).
Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record checks.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://alpha-stream.agentdiet.dev/v1/email-check)
Output
Returns a structured object indicating whether the email passed syntax validation, whether the domain has live MX records, SPF record presence and validity, DMARC policy configuration, whether the address appears to be from a disposable/burner provider, and whether it is a role-based account (e.g. info@, admin@).
Example use cases
Pre-send email list hygiene
“Before I send this newsletter, check whether contact@acmecorp.io is actually deliverable — I want to know if it has valid MX records, isn't a disposable address, and passes SPF and DMARC checks.”
Signup fraud prevention screening
“A new user just registered with noreply@tempmail.net — can you verify whether that's a disposable or burner email, and whether it's a real deliverable address or a role account we should block?”
B2B sales lead email validation
“I'm about to reach out to a sales prospect at sales@bigcorp.com — can you confirm the email is syntactically valid, the domain has working MX records, and it's not a generic role address before I send my pitch?”
Technical details
Endpoint
POSThttps://alpha-stream.agentdiet.dev/v1/email-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email deliverability check that goes beyond simple regex validation — particularly when you need DNS-level MX, SPF, and DMARC verification alongside disposable provider and role account detection in a single call. It is especially suited for agent workflows that require real-time email quality gating at signup, lead enrichment, or pre-send list scrubbing, and it supports x402 micropayment for per-call billing without subscription overhead.
Side effects
- Invalid or malformed email input returns a syntax error
- DNS lookup timeout for MX/SPF/DMARC records if the domain is slow or unresponsive
- Domain does not exist, resulting in no MX records found
- Payment required (HTTP 402) if x402 micropayment header is missing or invalid
- Rate limiting if too many requests are made in quick succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate for syntax, MX deliverability, and disposable risk |
Output
Schema · Response
{
"type": "object"
}Reviews
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